Initial commit: Brass & Sigil monorepo

Self-hosted Minecraft modpack distribution + administration system. - launcher/ Avalonia 12 desktop client; single-file win-x64 publish. Microsoft auth via XboxAuthNet, manifest+SHA-1 mod sync, portable install path, sidecar settings. - server/ brass-sigil-server daemon (.NET 8, linux-x64). Wraps the MC subprocess, embedded Kestrel admin panel with cookie auth + rate limiting, RCON bridge, scheduled backups, BlueMap CLI integration with player markers + skin proxy, friend-side whitelist request flow, world wipe with seed selection (keep current / random / custom). - pack/ pack.lock.json (Modrinth + manual CurseForge entries), data-only tweak source under tweaks/, build outputs in overrides/ (gitignored). - scripts/ Build-Pack / Build-Tweaks / Update-Pack / Check-Updates plus Deploy-Brass.ps1 unified one-shot deploy with version-bump pre-flight and daemon-state detection.
2026-05-05 00:19:05 +01:00
commit a1331212cb
99 changed files with 12640 additions and 0 deletions
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+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace ModpackLauncher.Services;
+
+public static class SystemInfo
+{
+    private const long DefaultFallbackKB = 8L * 1024 * 1024; // assume 8 GB if detection fails
+
+    [DllImport("kernel32.dll", SetLastError = true)]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    private static extern bool GetPhysicallyInstalledSystemMemory(out long memoryInKilobytes);
+
+    /// <summary>Total physically installed system RAM in megabytes.</summary>
+    public static int TotalPhysicalMemoryMB
+    {
+        get
+        {
+            try
+            {
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+                {
+                    if (GetPhysicallyInstalledSystemMemory(out var kb))
+                        return (int)(kb / 1024);
+                }
+                else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                {
+                    // Read MemTotal from /proc/meminfo
+                    foreach (var line in File.ReadAllLines("/proc/meminfo"))
+                    {
+                        if (line.StartsWith("MemTotal:", StringComparison.Ordinal))
+                        {
+                            var parts = line.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+                            if (parts.Length >= 2 && long.TryParse(parts[1], out var memKb))
+                                return (int)(memKb / 1024);
+                        }
+                    }
+                }
+                else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+                {
+                    // GC heap-size hint; not perfect but a reasonable fallback for macOS.
+                    var gcInfo = GC.GetGCMemoryInfo();
+                    if (gcInfo.TotalAvailableMemoryBytes > 0)
+                        return (int)(gcInfo.TotalAvailableMemoryBytes / (1024 * 1024));
+                }
+            }
+            catch
+            {
+                // Fall through to default
+            }
+            return (int)(DefaultFallbackKB / 1024);
+        }
+    }
+
+    /// <summary>Recommended max user-allocatable RAM (leaves headroom for OS + other apps).</summary>
+    public static int SafeMaxAllocationMB
+    {
+        get
+        {
+            var total = TotalPhysicalMemoryMB;
+            // Leave at least 4 GB for OS + browser + Discord + everything else.
+            var headroom = total >= 32 * 1024 ? 6 * 1024 : 4 * 1024;
+            return Math.Max(2048, total - headroom);
+        }
+    }
+}